NUGROHO, Agung. SPORT DEVELOPMENT INDEX (SDI) IN LANGKAT DISTRICT. Gladi : Jurnal Ilmu Keolahragaan, [S. l.], v. 15, n. 02, p. 221–231, 2024. Disponível em: https://journal.unj.ac.id/unj/index.php/gjik/article/view/45884. Acesso em: 3 nov. 2024.